Jamie,
the painting job looks really cool. About the model, it takes some time to learn the tools. There are some brushes that combined with lazymouse can be super precise. I like the brush 49+lazymouse, in various sizes, for a more controlled lines, for example. I feel like the main forms of the sculpt are all there but the details on top feel a little random. I would like to see them a little more controlled but as I said, takes some time to learn the tools. Once you had done more exercises in ZBrush, you will really feel more comfortable and then you will be able to use your INSANELY good traditional skills, adapting your techniques to the digital media. Then my friend, you will be unstoppable 
Please, don’t stay way from ZBrush for another year! Keep creating something on it and posting here from time to time. I can’t wait to see what you will do with it after you learn those tools and workflows.
All the best and keep inspiring us Jamie!
-Kris